Demyanov, Vladimir F. <br/><br/>
Approximate methods in optimization problems   
by Vladimir F. Demyanov, Aleksandr M. Rubinov 
 - New York  American Elsevier Publishing Company  1970 
 - ix, 256p. 
<br/><br/><label>ISBN: </label>0444000887 
<br/><br/><label>LCCN: </label>75-135057 
<br/><br/><label>Dewey Class. No.: </label>515.7  / N703